of philadelphia



(No Model.)

A. W. FRANCE.

FUSE B0X.

UNITED STATES PAfrnNr @einen ADAM IVARREN FRANCE,YOF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO ARTHUR II. JONES, OF SAME PLACE.

FUSE-BOX.

srncIrIcArIoN forming part or Letters Pateneno. @permeated october i9,1897.

Application tiled March 30,1897. Serial No. 629,904. (No model.)

To all whom t nfl/ty concern.-

Beit known that LADAM WARREN FRANCE, a citizen of the United States,residing in the city and county of PlIiladelphia,State of Pennsylvania,have invented a new and useful Improvem ent in Fuse-l3oXes,which improvemen t is fully set forth in the following specification and accompanyingdrawings.

My invention consists of an improved construction of fuse-box, which isreadily accessible under all conditions, the novel features of the samebeing hereinafter fully set forth, and pointed out inthe claims.

Figure 1 represents aperspectiveview of a fuse-box embodying myinvention. Fig. 2 represents on a reduced scale a front elevation of afuse-box, a portion of its outer casing being removed. Figf represents aperspective view of a non-conducting plate employed, in which a portionof the conductors and their contact devices are embedded. Fig. 4represents a section on line :r,Fig. 3. Fig. 5 represents a frontelevation of the fusebox seen in Fig. 2, showing theouter plate removedand a portion of the inner conduct-l in gbloclr in sections. Fig. 6represents a perspective view of the inner,conducting-block seen in Fig.5, in detached position. Fig. 7 represents a sectionon line y y, Fig. l,showing the parts in assembled position.

Similar letters ofreference indicate corresponding parts in the figures.v

Referring to the drawings, A designates a casing, the same consisting ofthe sections B C, the lower portions of the casing having the cap D,which is pivotally attached to one of the sections B C, said capbeingnormallyA held in closed position by means of the hook' or latch F,which engagesthe lug E. v

In Fig. 2 I have shown the section C of the casing removed, therebyshowing the fusebox which has the plate G, the latter having embedded orotherwise secured therein the contacts H and J, which are oppositelylocated, and have connected therewith the insulated conductors K and L,which latter are embedded in the plate G, as will be understood fromFigs. 3 and 4, it being of course understood that said plate is composedof suitable non-conducting material.

M designates a non-conducting plug or the open end of the case N.

block which is adapted to be placed Within the vcase N, also composed ofnon-conducting material, and in the present instance open at its bottom,the general construction of said block M being apparent from Fig. 6.

P and Q designate recesses in the walls of the case N, saidrecessesbeing oppositely located, as will be evident from Fig. 5.

R designates a conducting screw or, bolt, one end of whichl holds inposition the contact-spring J while its other end or head S is adaptedto serve as a binding-post for the conductor U, which is composed offusible material, said head S being located in the recess T of Vtheblock M.

The conductor U leads from the binding post or head S through the tubeor conduit V, of rubber or similar material, which latter is located inan opening extending through the block M, the extremity of saidconductor U being held in position by means of one end of thebinding-post W of the screw or conductor, said binding-post beinglocated in the recess X, the other end of said screw serving to hold inposition the contact-spring Y, it being noted that the bloclCM isprovided with oppositely-located recesses P' and'Y' in order to allowthe contact-springs J and Y sufficient play. p.

The operation is as follows, the manner of assembling the parts beingiirst described:

AThe case N is placed in one of the sections of thecasing A', in thepresent instance in B,

and the non-conducting plate Gr is placedon said case N, the contacty Hbeing inserted in the recessvP, so that it abuts against the spring T",and the contact J entering the recess Q, so that it abuts againstthespring Y.

The plug or block M may now be inserted in v rIVhe section C may besecured in place, for it will of course be evident that by reason of thecap D access to the block M may be readily had without separating thesections.

The course of the electricity is as follows: The current ent-ers theconductor K and passing through the contact J reaches the spring Y, andpasses thence through the conductor W to the conductor U, and thence tothe conductor R and spring J to the contact Il, and out the conductor L,it being of course IOO evident that the electricity may take theopposite course to that already described it desired. Then the currenthas reached the proper predetermined amount, the conductor U will fuse,and especial emphasis Vis laid upon the fact that by reason of thepeculiar construction and combination o'l parts there is no liability ofthe electricity jumping `from the conductor W' to the conductor lt afterfusing of the conductor U, nor is there any liability of the currentpassing 'from the vfusebox to the casing.

Having thus described my intention, what I claim as new, and desire tosecure by liet ters Patent, is-

l. A fuse-box having an outer casing, an inner casing of nouconductiblematerial, a non-eonductible plate with oppositely-locat ed contaetpointsthereon having insulated cenductors connected therewith, a bloch in saidinner casing having eoiulucting-bolts passing` therethrough fromopposite sides thereof, springs connected with the ends of said boltsand in contact with said contact-points and a 'fusible con d uetorpassing through said block and connected at its ends with said boltsI onopposite sides el the said plug.

2. A `fuse-box haring a sectional outer casing7 an inner casing havingthe oppositelylocated recesses l)s and Q in its inner face, thenon-conducting plate G with contacts ll and J, having the conductors land l, coin nected therewith, the block "il, the conduct ing-bolts R andiV passing` through the block from opposite sid es thereot', the springsJ and Y connected with said bolts, and in contact with said contacts liand J, and the fusible conductor U passing through said block and havingits ends connected With the heads ot said belts on opposite sides ol'said plug.

A fuse box having within an inner case, a non-coiulueting bloei; with anopenein ing therethrough, eonduetiiig-bolts passing through said block,spring-plates secured to said belts on opposite sides ol' said bloeit, atube in said opening in the block, and a fusibll.: conductor leadingthrough said tube and connected at its ends with the heads ol saidboltsy and insulated conductors having connection With contact pointsVin contact with said spring-plates.

st. ln a fuse-box, a non-cond ucting block N, having recesses l) and Qlocated oppositeiy therein, conductive screws .lx-t and W located, insaid block, contact-springs and Y heid in position by said screws, Ysuitable cominctor U intermediate said conductive serons, a passagethrough said block and a tube el' rubber or similar material located insaid passage and incasing said fusible coiuluctm', in combination with aplate t? having the op positely-loeated contacts ll and .'i, projectingAtherefrom and conductors leading from said contacts, the latter beingadapted to enter said recesses l) and Q and Contact with the springs l'and Y when the parts are assembled.

5. ./'t fuse-box consisting ol an outer easing, composed ot' thesections l and U, a bottom cap l) piyotally attz'tehed te one ort saidscctions, means li'or holding said cap in closed position, thenonconducting ease N contained within said easingl and open at its bottom, the non-comlucting` block ,il eoiistrueted as described and adaptedto be inserted into said case trom the bottom thereof, eon ductingdevices carried by said block and the non-etnnlucting plate G haringconductors projecting therefrom and adapted Ato contact nitl saidconducting devices.

W'itncsses:

.Tenn It. tVrni'innsi inn, WAL t?. ttitlonnsnmn.

